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Pubmed for Handhelds

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  • Title: Age and iconic read-out.
    Author: Cerella J, Poon LW, Fozard JL.
    Journal: J Gerontol; 1982 Mar; 37(2):197-202. PubMed ID: 7057005.
    Abstract:
    Letter recognition was investigated in 16 young adults (mean age = 21) and in 16 older men (mean age =64) by exposing seven-letter strings for brief periods followed by a mask. Young adults were able to identify three letters at a rate of 27 msec per letter, a value which is typical of other reports. Any additional letters were identified at a much slower rate. In contrast, older adults were able to identify only two letters, at a rate of 35 msec per letter. Older men thus showed a decline in both the amount of and rate at which information was encoded from the icon within a fixation period. These findings have implications for experiments involving visual arrays.
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